EUVD-2026-19651
GHSA-fmwg-qcqh-m992
CVSS Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Lifecycle Timeline
4Tags
Description
Gotenberg is an API for converting document formats. In 8.29.1 and earlier, Gotenberg uses dlclark/regexp2 to compile user-supplied scope patterns without setting a proper timeout. Users with access to features using this logic can hang workers indefinitely.
Analysis
Denial of service in Gotenberg API (≤8.29.1) allows unauthenticated remote attackers to indefinitely hang worker processes via malicious regular expression patterns. The vulnerability stems from missing timeout enforcement in the dlclark/regexp2 library when compiling user-supplied scope patterns, enabling catastrophic backtracking attacks (CWE-1333). …
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Remediation
Within 24 hours: Identify all Gotenberg API instances in production and staging; document versions and network exposure; confirm if version ≤8.29.1 is deployed. Within 7 days: Implement network-level input validation to block malformed regex patterns before reaching Gotenberg; apply strict request timeouts at reverse proxy or load balancer (recommend 30-second maximum); restrict Gotenberg API access to trusted internal networks only if operationally feasible. …
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